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Old 11-28-2012, 04:26 PM   #1 (permalink)
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Default What gears?

I have a 1996 X90 , automatic transmission with a 3" Calmini lift and 32x10.50 tires.
I would really like to get some gas mileage back.
From what I found from Kickfix it came stock with 4.625 gears.
Every once in a while it will be going off road but in general it will be a daily driver.
I would like to be able to go to a junk yard and unbolt 2 third members and go home and bolt them back in.
Any suggestions?
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Old 11-28-2012, 08:17 PM   #2 (permalink)
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http://www.suzuki-forums.com/suzuki-...tio-chart.html 4.3 would be the best you could hope for and it would make your x90 even slower considering your tire choice...I would retain your current gearing and try to keep the trunk empty and your tires full, also stay off the go button....want really good economy stay home. You made your choice and I bet your car looks good. A good state of tune and a few fuel econ driving tricks would do more for you than going 4.3 would...that's assuming that 4.3s would do anything at all. That x90 on 32s...post pics plz
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Old 11-28-2012, 08:56 PM   #3 (permalink)
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I thought I would go up in gears to get some mileage and "performance" back. Something like a 5.12 gear? Like in a Grand Vitara?
This isn't my first lifted vehicle and I know there is some down side as far as mileage goes I just want a little back.
I'll put some pics up in the morning.
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Old 11-28-2012, 09:26 PM   #4 (permalink)
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oh 5.12s...that may help. Some people put taller gears in to get better econ. 5.12s are super common and your car would be peppier and would drive better, may even give you a jump in mpgs. You will never get close to stock, as your tires take more than the little motor can give
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Old 11-29-2012, 07:43 AM   #5 (permalink)
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Stock 205/75/15 tires where about 27.2 inches tall.

32/27.2 = 1.176

So about 18% taller

Your gears

5.125/4.625 = 1.108

So about 11% more reduction going for those 3rd members

-----------

I would double check your final drive by jacking up a wheel, making a mark on the drive shaft and see how many turns you get per turn of the wheel

Just over 4.5 turns = 4.625
Just over 5 turns = 5.125

and so on.
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Old 11-29-2012, 06:16 PM   #6 (permalink)
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I'm assuming you have bfg for that size... which means they aren't terribly heavy.

Honestly you should be getting 18-25ish depending upon driving habits. Biggest killer to mileage on the hwy is actually aerodynamics.
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Old 11-29-2012, 11:44 PM   #7 (permalink)
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GL with your project man.

Last edited by barfer; 11-29-2012 at 11:55 PM.
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Old 11-30-2012, 08:38 AM   #8 (permalink)
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I said 32s but I was wrong. I have 31x10.50s Pro Comp Xtreme Mud Terrains.
I didn't go with the 32s because I was hoping to do this with out putting on a body lift. I have cut as much as I can with out getting into the cab but it looks like I will try and put the 3" body lift on sometime around Christmas. But anyway I know it will never be stock again and I'm ok with that. But if I can make it a little better, I'm not afraid to turn a wrench or ask questions.
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